<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Page Title</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js">
    </script>
    <script src="jquery1.7.js"></script>
</head>
<div>
    <input type="text" id="input" />
    <button id="btn">提交</button>
    <ul id="list"></ul>
</div>

<body>
    <script>
        function Page() {

        }

        $.extend(Page.prototype, {
            init: function() {
                this.bindEvents()
            },
            bindEvents: function() {
                var btn = $("#btn");
                btn.on('click', $.proxy(this.handlBtnClick, this))
            },
            handlBtnClick: function() {
                var inputElm = $("#input");
                var inputValue = inputElm.val();
                var ulElm = $("#list");
                ulElm.append('<li>' + inputValue + '</li>')
            }

        })
        var page = new Page();
        page.init();
    </script>
</body>

</html>